Chemplast Sanmar Electrical Maintenance Engineer Interview Questions and Answers

Q1. What is compressor and it's types
Ans. 
A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.
• Types of compressors include reciprocating, rotary screw, centrifugal, and scroll compressors

• Reciprocating compressors use pistons to compress gas

• Rotary screw compressors use two rotating screws to compress gas

• Centrifugal compressors use a rotating impeller to create high-velocity gas flow

• Scroll compressors use two interleav
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Q2. SAP HANA S4 T codes
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Q1. Electrical and electrical component
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Q2. Induction motor and generator etc.
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Q3. MOSFET bgt, igbt etc.
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Q4. Dc motor and dc component etc
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Q1. Electrical and electrical component generator ac motor and dc motor, vfd, MOSFET, bjt, igbt,
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Written test of Core subjects

Q1. Introduction, Internship,Aim
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Q1. Dream , Resume ,Project , Motive
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Q1. Why did you leave your last job?
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Q2. Provide me all documents needed
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Q3. What was your last package? Provide salary slip and joining letter.
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Q1. Where did you work lastly
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Q2. Why did you leave last company
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Q3. What was your role
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Q4. Tell equipments u handled.
Ans. 
I have handled various equipment including pumps, compressors, turbines, and conveyors.
• Pumps: I have experience in maintaining and troubleshooting centrifugal pumps used in industrial processes.

• Compressors: I have worked with reciprocating and rotary compressors used for air and gas compression.

• Turbines: I have dealt with steam turbines used in power generation and gas turbines used in various applications.

• Conveyors: I...read more
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Q5. What is vacuum drop permissible for reactor vacuum testing?
Ans. 
The permissible vacuum drop for reactor vacuum testing depends on various factors such as the type of reactor and its design specifications.
• The permissible vacuum drop can vary depending on the type of reactor being tested.

• For some reactors, a vacuum drop of 5-10% may be considered acceptable.

• In other cases, a vacuum drop of less than 2% may be required.

• The specific permissible vacuum drop should be determined based on...read more
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Q6. How will you check for pump alignment?
Ans. 
To check for pump alignment, use laser alignment tools and follow a step-by-step process.
• Use laser alignment tools to measure and correct misalignment

• Start by checking the pump and motor shafts for parallelism and angularity

• Measure the offset and angular misalignment using the laser alignment tool

• Adjust the pump and motor positions to achieve proper alignment

• Recheck the alignment after adjustments and make necessary co...read more
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Q7. What is temperature of cooling tower water temp?
Ans. 
The temperature of cooling tower water varies depending on the specific system and operating conditions.
• The temperature of cooling tower water is typically maintained within a specific range to ensure efficient cooling.

• Factors such as ambient temperature, heat load, and water flow rate can influence the cooling tower water temperature.

• Cooling tower water temperature can be measured using temperature sensors or thermome...read more
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Q8. What is unit of pressure?
Ans. 
The unit of pressure is the pascal (Pa).
• The pascal is defined as one newton per square meter (N/m²).

• Other common units of pressure include pounds per square inch (psi) and atmospheres (atm).

• Pressure can also be measured in millimeters of mercury (mmHg) or torr.

• In engineering, pressure is often expressed in kilopascals (kPa) or megapascals (MPa).
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Q9. What is ph range?
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pH range refers to the scale that measures the acidity or alkalinity of a substance.
• pH range is a scale from 0 to 14.

• A pH value of 7 is considered neutral.

• Values below 7 indicate acidity, with lower values being more acidic.

• Values above 7 indicate alkalinity, with higher values being more alkaline.

• For example, lemon juice has a pH range of 2-3, making it highly acidic.

• Baking soda has a pH range of 8-9, making it slight
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Q1. Types of material of reactor
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Reactors can be made of various materials depending on the application and requirements.
• Common materials include stainless steel, carbon steel, and titanium.

• Reactor linings can be made of glass, ceramic, or polymer materials.

• Materials must be chosen based on factors such as temperature, pressure, and chemical compatibility.

• Reactor materials must also be able to withstand corrosion and erosion over time.

• Materials used i...read more
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Q2. Remove to change reactor new sheel
Ans. 
The question is unclear and lacks context.
• Please provide more information about the reactor and the new shell.

• What is the reason for removing the old shell?

• What tools and equipment are required for the job?

• What safety precautions need to be taken?

• Are there any specific procedures or guidelines to follow?

• Consult with experts and refer to manuals before attempting the task.
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Q3. Types of vessels entry
Ans. 
There are three types of vessels entry: Confined Space Entry, Hot Work Entry, and Cold Work Entry.
• Confined Space Entry involves entering a space that is enclosed and has limited access points.

• Hot Work Entry involves entering a space where welding, cutting, or other heat-producing activities are being performed.

• Cold Work Entry involves entering a space where maintenance or repair work is being done that does not involve...read more
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Q4. Types of blowers and full form of pm
Ans. 
Blowers can be classified into centrifugal, positive displacement, and regenerative types. PM stands for Preventive Maintenance.
• Centrifugal blowers use centrifugal force to increase air pressure

• Positive displacement blowers use a mechanical means to trap and transport air

• Regenerative blowers use a rotating impeller to create air flow

• PM is a maintenance strategy that involves regular inspections and repairs to prevent e
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Q5. Types of empelr and no oil
Ans. 
Empelr and no oil are not common terms in maintenance engineering. Please provide more context.
• Please provide more information or context for the terms empelr and no oil.

• Without context, it is difficult to provide a meaningful answer.

• It is possible that these terms are specific to a certain industry or company.

• Please clarify the question so that a proper answer can be given.
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Q1. Pump curve, boiler related questions
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Q1. 1. Types of Pump 2. Types of casing 3. Plant process 4. Major maintenance attend in your perious organisation periods 5. Centrifuge pusher 6. Mechanical seals 7. Boiler and Thermic fluid heater questions i...read more
Ans. 
Questions related to types of pumps, casing, plant process, maintenance, centrifuge pusher, mechanical seals, boiler and thermic fluid heater, pump efficiency, head measurement, and alignment method.
• Types of pumps include centrifugal, reciprocating, and rotary pumps

• Types of casing include volute, diffuser, and multistage casing

• Plant process involves the steps and equipment used in a manufacturing process

• Major maintenan...read more
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Q2. Mee plant? Process regarding?
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why are you looking for a change?
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Q5. Tell me about yourself.
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Q6. Where do you see yourself in 5 years?
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Q1. This question is about job
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Q1. What are your salary expectations?
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